Simple program to generate N random numbers into standard output. You can pipe output from program into file manually. Example: echo 50 | ./a.out > random.txt

gen100.cpp

/**
 * Input: n - number of random numbers to generate
 * Output: n random numbers printed onto standard output separated by a space.
 */

#include <iostream>
#include <cstdlib>
#include <ctime>

int main()
{
    int n;
    std::cin >> n;

    std::srand(std::time(nullptr));

    for (int i=0; i<n-1; ++i)
    {
        std::cout << (std::rand() % 500) << " ";
    }
    std::cout << (std::rand() % 500);
    
    return 0;
}